Which MM subframe crush sleeve goes in front and rear?

[cbehr]

I can’t tell the difference between the old sleeves and their sizes difference. Which sleeve goes in the front of the irs subframe bushing and which in the back?

 

[Blkkbgt]

I believe the larger diameter bold is for the forward mount. Just use the bolts as a guide if you forgot. One of them will be too big to pass through the sleeve.

 

[Albatross]

Blkkbgt is correct. The one with the larger inner diameter goes in the front to fit a larger 9/16 bolt through. The stock bolts for the front subframe mount aren't that big and it is recommended to upgrade to a 9/16 grade 8 for increased strength.

 

[cbehr]

Thank guys, didn’t think only one would fit. I did upgrade to 14mm front which barely fit the front sleeve but the back bolt/sleeve seems sloppy...much more play than I would have guessed.